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Sorry, ehizzle, but you've got to provide better data than that to support your conclusion. I don't think there is anything obvious about your conclusion as you stated.
HeySteve, Of course not.I am sure you have never shared the infrared shots with your dealers. I'm sure it would make for an interesting study, to photograph various manufacturers side by side, in the same envirement.
I was referring to the statement that heat loss is only from the top. My conclusion is supported by the data. All spas have covers. Insulated spas have insulation on the sides while non insulated spas do not. Those spas cost more to run, so obviously heat is also lost through the side. Seemed simple enough to me.
All this talk of hats and attics is fun, but has no bearing on a body of heated water.
Which part of my data was skewed?
Can you say........... Stalemate,...even-steven, Mexican standoff,dead heat ,push, tie, dead end, equivalence, even game, level, Beating a DEAD Horse............ DONE!! and DONE!!!!! ............ Next? ..............?
What if it's one of those thick ones with the ball on top and flaps that come down over your ears?